103344-16-7 2-Methyl-6-phenyl-8H-(1,3,4)thiadiazolo(3,2-a)thieno(2,3-d)pyrimidin-8-one 8H-(1,3,4)Thiadiazolo(3,2-a)thieno(2,3-d)pyrimidin-8-one, 2-methyl-6-phenyl- BRN 5588784